21070115

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3793}}^1$

素因数の和:3910

約数の個数: 16

約数和(自身を含む): 27863136

約数和(自身を除く): 6793021

約数列:

[1, 5, 11, 55, 101, 505, 1111, 3793, 5555, 18965, 41723, 208615, 383093, 1915465, 4214023, 21070115]

約数ペア:

[(1, 21070115), (5, 4214023), (11, 1915465), (55, 383093), (101, 208615), (505, 41723), (1111, 18965), (3793, 5555)]